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TRADE ACCOUNTS RECEIVABLE, NET TRADE ACCOUNTS RECEIVABLE, NET (Tables)
 12 Months Ended
Dec. 31, 2014
Receivables [Abstract]  
Schedule of movements in the allowance for doubtful accounts
Movements in the allowance for doubtful accounts in the three years ended December 31, 2014 may be summarized as follows;
(in thousands of $)
 
Balance at December 31, 2011
(4,487
)
Additions charged to income
(6,033
)
Deductions credited to income
663

Balance at December 31, 2012
(9,857
)
Additions charged to income
(55
)
Balance at December 31, 2013
(9,912
)
Additions charged to income
(68
)
Balance at December 31, 2014
(9,980
)